Acknowledgments

I decided to enrol in a Ph.D. programme at the University of Bonn, in Germany, when I was well into my working carrier as a research geomorphologist in Italy. Embarking in such a venture required support from many, and particularly from my family and my closest colleagues. During this endeavour, I received constant encouragement and support from Emanuela and Martina. Their unconditioned and relentless assistance and appreciation was indispensable. ...